Joint or constructive criminality - the law relating to joint offender or constructive criminality is laid down under section 34 to 38 of Indian Penal Code. There are four important principles governing joint offender Act done by several persons in furtherance of common intention - section 34 Act done with criminal knowledge or intention - section 35 Co-operation in acts constituting an offence - section 37 Persons concerned in criminal act may be guilty of different offence - section 38 Sections 34 and 149 are the relevant provisions of group liability in the Indian Penal Code. Section 34 defines common intention, whereas 149 defines the liability of a group acting in the prosecution of a common object. Common intention means the same intention, whereas common object means similar intention towards achieving an objective. Under the concept of group liability, all the members of the group are equally liable even if